SKU: 0010024667

Vaillant ecoTEC plus VU 35 CS /1-5 single-ciruit gas condensing boiler

Name: Vaillant ecoTEC plus VU 35 CS /1-5 single-ciruit gas condensing boiler
Brand: Vaillant
SKU: 0010024667
Availability: InStock

Vaillant ecoTEC plus VU 35 CS/1-5 is a high-efficiency wall-mounted condensing gas boiler designed for residential heating applications. Using advanced condensing technology, the boiler utilizes the latent heat from flue gases to achieve high efficiency, reduced energy consumption, and environmentally friendly operation.

The boiler is equipped with a 1:10 modulation range burner, which automatically adjusts the output according to the actual heating demand, ensuring precise temperature control, comfort, and improved energy efficiency. The IoniDetect combustion control system automatically regulates the gas-air ratio according to gas quality, providing stable, safe, and efficient combustion.

Vaillant ecoTEC plus VU 35 CS/1-5 is suitable for new construction projects, private houses, apartments, and heating system renovation projects. The boiler is compatible with various heating systems, including radiator heating and low-temperature underfloor heating, and can be integrated with solar systems and heat pumps.

The model features an advanced DIA diagnostic system, a backlit graphic display with touch controls, and modern control options for easy configuration and convenient operation. The high-efficiency pump, pressure and flow sensors, 10-liter expansion tank, and safety relief valve ensure reliable and safe system performance.

Vaillant ecoTEC plus VU 35 CS/1-5 is a reliable German-engineered heating solution designed for high efficiency, long service life, and maximum comfort.

Specification	Value
Energy Efficiency Class	A
Technical Specifications
Heat Output (at 50/30°C), kW	4.2–35.7
Heat Output (at 80/60°C), kW	4.0–34.8
Heat Output in DHW Cylinder Loading Mode, kW	39.7
Flue Gas Temperature (min/max), °C	35/80
Flue Gas Mass Flow Rate (min/max), g/s	1.97/21.13
Residual Head of Circulation Pump (nominal), mbar	250
Maximum Flow Temperature, °C	85
Maximum Operating Pressure in Heating Circuit, bar	3
Nominal Heating Water Flow Rate, l/h	1498
Power Supply, V/Hz	230/50
Maximum Electrical Power Consumption, W	125
Connections
Heating Flow Connection	G 3/4"
Heating Return Connection	G 3/4"
DHW Cylinder Flow Connection	G 1/2"
DHW Cylinder Return Connection	G 1/2"
Gas Connection	Ø15 mm (R 3/4" adapter included in delivery)
Flue / Air Duct Connection	60/100 mm
Safety Valve Connection	G 1/2"
Condensate Drain Connection	19 mm
Dimensions and Weight
Dimensions (H × W × D), mm	720 × 440 × 382
Weight (empty), kg	40.5

Feature	Description
IoniDetect Gas Adaptation System	Automatically adjusts the gas-air ratio according to gas quality to ensure stable and efficient combustion.
1:10 Modulation Range	Enables precise output adjustment according to heating demand and improves energy efficiency.
Advanced DIA Diagnostic System	Provides simplified diagnostics, quick fault detection, and easier maintenance.
LIN-bus Communication System	Provides access to additional operating data for advanced settings and diagnostics.
Heating System Resistance Monitoring	Optimizes pump operation, reduces hydraulic noise, and enables operation without a bypass valve.
Automatic Filling and Pressure Monitoring	Ensures heating system pressure control and simplifies maintenance.
Weather-Compensated Control Capability	Adjusts heating operation according to outdoor temperature conditions.
Energy and Gas Consumption Monitoring	Enables monitoring of energy usage and gas consumption data.
Touch Control Panel with LED Backlight	Provides intuitive operation and easy system configuration.
Low Noise Operation	Ensures quiet and comfortable operation in residential environments.
Recyclable Materials Usage	Manufactured using materials suitable for recycling.
Made in Germany	Manufactured according to Vaillant high quality standards.

Installation Option	Description
Wall-mounted Installation	Compact wall-mounted condensing boiler design suitable for space-saving installation.
Heating Systems	Suitable for various heating systems, including low-temperature heating applications.
Radiator Heating Systems	Compatible with traditional radiator heating systems.
Underfloor / Panel Heating Systems	Suitable for low-temperature underfloor and panel heating systems.
New Construction and Renovation Projects	Designed for installation in new buildings, renovated houses, and apartments.
Roof Boiler Rooms	Suitable for compact rooftop boiler room applications.
Domestic Hot Water Preparation	Can be combined with an indirect DHW cylinder for domestic hot water production.
Combustion Air Supply	Allows combustion air intake from inside or outside the building.
Flue and Air Duct Systems	Compatible with certified Vaillant flue and air duct systems.
Solar and Heat Pump Integration	Can be combined with solar systems and heat pumps for enhanced energy efficiency.

Equipment	Description
High-efficiency Pump	Ensures optimized heating system performance with reduced energy consumption.
Water Pressure Sensor	Monitors heating system pressure for reliable operation.
Volumetric Flow Sensor	Measures water flow for precise system control.
Pressure Gauge	Provides visual monitoring of system pressure.
10-liter Expansion Tank	Compensates pressure changes in the heating circuit.
Stainless Steel Condensing Heat Exchanger	Provides high durability, corrosion resistance, and long service life.
IoniDetect Combustion Control System	Automatically adapts combustion according to gas quality for stable and efficient operation.
Electronic Ignition and Combustion Control	Ensures safe ignition and continuous monitoring of combustion quality.
Backlit Graphic Display with Touch Controls	Provides convenient operation and easy system configuration.
eBUS Communication System	Enables advanced control and connection with Vaillant system components.
External Heating Circuit Pump and DHW Cylinder Control	Allows control of external heating circuit pump and indirect DHW cylinder loading.
Safety Relief Valve	Provides additional protection against excessive system pressure.

Installation Instructions	Russian
User manual	Russian

Vaillant ecoTEC plus VU 35 CS /1-5 single-ciruit gas condensing boiler

Specifications

Features

Installation and Application Options

Equipment

Documentation